It is 56 BC. As Fronto and his friends' winter in Rome and Caesar in Illyricum, trouble is brewing in the north. The tribes of Armorica, driven to desperate action by the harsh rule of Crassus, raise their standards in defiance of the Roman eagle, causing a chain reaction that threatens everything the legions of Caesar have achieved. Meanwhile, in Rome, the conspiracies against Caesar take an unexpected turn, plunging Fronto and his friends into a world of crime, violence and intrigue that threaten everything the legate cares about. In a year that takes the legions and their commanders to the Atlantic Ocean, the treacherous Pyrenees, and the seething underbelly of Rome, everything is about to change for Marcus Falerius Fronto.